UE4.10 4.10.1 tested
Any blank blueprint project
Occurrence 100%
Step:
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Create new blueprint derived from actor or pawn (maybe happens on any BP class, actor and pawn are tested by me)
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Create a function
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Create a local variable which type is a object type (such as pawn ) in this function
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Drag the local variable into function and select get
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Convert the node validated get
Compile the blueprint will cause unreal engine crash.